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  <title>预定义常量</title>

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</div><hr /><div id="constants.dbx" class="appendix">
 <h1>预定义常量</h1>

 <p class="simpara">下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。</p>
  <dl>

    
     <dt id="constant.dbx-mysql">
      <strong><code>DBX_MYSQL</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-odbc">
      <strong><code>DBX_ODBC</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-pgsql">
      <strong><code>DBX_PGSQL</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-mssql">
      <strong><code>DBX_MSSQL</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-fbsql">
      <strong><code>DBX_FBSQL</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-oci8">
      <strong><code>DBX_OCI8</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) (available from PHP 4.3.0)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-sybasect">
      <strong><code>DBX_SYBASECT</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-sqlite">
      <strong><code>DBX_SQLITE</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) (PHP 5)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-persistent">
      <strong><code>DBX_PERSISTENT</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-result-info">
      <strong><code>DBX_RESULT_INFO</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-result-index">
      <strong><code>DBX_RESULT_INDEX</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-result-assoc">
      <strong><code>DBX_RESULT_ASSOC</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-result-unbuffered">
      <strong><code>DBX_RESULT_UNBUFFERED</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) (PHP 5)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-colnames-unchanged">
      <strong><code>DBX_COLNAMES_UNCHANGED</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) (available from PHP 4.3.0)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-colnames-uppercase">
      <strong><code>DBX_COLNAMES_UPPERCASE</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) (available from PHP 4.3.0)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-colnames-lowercase">
      <strong><code>DBX_COLNAMES_LOWERCASE</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>) (available from PHP 4.3.0)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-cmp-native">
      <strong><code>DBX_CMP_NATIVE</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-cmp-text">
      <strong><code>DBX_CMP_TEXT</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-cmp-number">
      <strong><code>DBX_CMP_NUMBER</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-cmp-asc">
      <strong><code>DBX_CMP_ASC</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
    
     <dt id="constant.dbx-cmp-desc">
      <strong><code>DBX_CMP_DESC</code></strong> 
      (<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
     </dt>

     <dd>

      <span class="simpara">
       
      </span>
     </dd>

    
   </dl>

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